body {
    font-size: .28rem !important;
    background: rgb(245,250,250);
}
/* 上--頂部導航 */
.header{
    width: 100%;
    height: 1.48rem;
    background: rgb(41,204,177);
    /* 固定定位 */
    position: fixed;
    left: 0;
    top: 0;
    /* 层级关系 */
    z-index: 999;
    /* 弹性盒模型 */
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* 字体属性会自动继承，所以直接加到祖先元素 */
    color: #fff;
}
/* 左侧 */
.header>div:nth-of-type(1){
    margin-left: .2rem;
    /* 弹性盒模型 */
    display: flex;
    align-items: baseline;/*交叉轴按照基线对齐*/
}
.header>div:nth-of-type(1) h2:nth-of-type(1){
    margin-right: .2rem;
}
/* 短横线 
.header>div:nth-of-type(1) h2:nth-of-type(1) div{
    width: 80%;
    height: .04rem;
    background: #fff;
    position: absolute;
    left: 10%;
    bottom: -0.1rem;
}
/* CSS-伪元素 */
/* .header>div:nth-of-type(1) h2:nth-of-type(1)::after{ */
.header>div:nth-of-type(1) h2.active::after{
    content: "";
    display: block;
    width: 80%;
    height: .04rem;
    background: #fff;
    position: absolute;
    left: 10%;
    bottom: -0.1rem;
}
/* 激活项 */
.header>div:nth-of-type(1) h2.active{
    font-weight: bold;
    font-size: .36rem;
    /* 相对定位 */
    position: relative;
}


/* 右侧 */
.header>div:nth-of-type(2){
    margin-right: .2rem;
}
.header>div:nth-of-type(2) i:nth-of-type(1){
    font-size: .36rem;
    margin-right: .12rem;
}
.header>div:nth-of-type(2) i:nth-of-type(2){
    font-size: .28rem;
}


/* 1.banner轮播图 */
.banner{
    height: 4rem;
    /* 线性渐变 */
    background: linear-gradient(rgb(41,204,177),rgb(245,250,250));
    /* 圆角 */
    border-radius: 0 0 22% 22%;
    /* 溢出隐藏 */
    overflow-y: hidden;
    /* 上外边距 */
    margin-top: 1.48rem;
}
.banner .swiper-container,
.banner .swiper-container .swiper-wrapper,
.banner .swiper-container .swiper-wrapper .swiper-slide,
.banner .swiper-container .swiper-wrapper .swiper-slide img{
    width: 100%;
    height: 3.8rem ;
    border-radius: .2rem;
}
.banner .swiper-container .swiper-wrapper .swiper-slide.swiper-slide-active{
    width: 80% !important;
}
.banner .swiper-container .swiper-wrapper .swiper-slide.swiper-slide-prev,
.banner .swiper-container .swiper-wrapper .swiper-slide.swiper-slide-next{
    width: 5% !important;
    transform: scale(0.8);
    overflow: hidden;
}
.banner .swiper-container .swiper-wrapper .swiper-slide.swiper-slide-prev img,
.banner .swiper-container .swiper-wrapper .swiper-slide.swiper-slide-next img{
    width: 7.5rem;
}


/* 2.分类集锦 */
.sync_class{
    width: 7.1rem;
    min-height: 2rem;
    /* border: 1px solid; */
    margin: .4rem auto 0;
}
.sync_class.questions{
    margin-top: .2rem;
    margin-bottom: 1.6rem;
}
/* 同步课程-上-标题 */
.sync_class>.title{
    height: .6rem;
    line-height: .6rem;
    /* background: yellowgreen */
    border-left:.06rem solid rgb(41,204,177);
    /* 弹性盒模型 */
    display: flex;
    justify-content: space-between;
}
.sync_class>.title h3{
    font-size: .36rem;
    font-weight: bold;
    color:#333;
    text-indent: .06rem;
}
.sync_class>.title a{
    color: #888;
}
/* 同步课程-下-内容 */
.sync_class>.content{
    height: 4.5rem;
    /* border: 1px solid; */
    background-color: #fff;
    margin-top: .2rem;
    border-radius: .12rem;
    padding: .2rem;
    /* 弹性盒模型 */
    display: flex;
    flex-wrap: wrap;
}
/* 同步课程-下-内容-图片信息 */
.sync_class>.content img{
    width: 100%;
    height: 3.4rem;
}
/* 同步课程-下-内容-文本描述信息 */
.sync_class>.content>div{
    width: 100%;
    height: 1.1rem;
    /* background: lightblue; */
    /* 弹性盒模型 */
    display: flex;
    justify-content: space-between;
    align-items: center;
}
/* 左侧 */
.sync_class>.content>div>div{
    max-width: 60%;
}
.sync_class>.content>div>div h2{
    /* 省略号三部曲 */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sync_class>.content>div>div span:nth-of-type(1){
    color: rgb(41,204,177);
    font-size: .3rem;
}
.sync_class>.content>div>div span:nth-of-type(2){
    color: #888;
    font-size: .24rem;
}
.sync_class>.content>div>button{
    border: none;
    color: #fff;
    width: 1.8rem;
    height: .8rem;
    border-radius: .06rem;
    background: rgb(41,204,177);
    font-size: .28rem;
}